<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<body>
  <div id="app"></div>
  <script src="./react.js"></script>
  <script src="./react-dom.js"></script>
  <script>
    ReactDOM.render(
      React.DOM.div(
        {
          className:'my-div',
          htmlFor:'me',
          style:{
            fontSize:'20px',
            color:'red'
          }
        },
        'Hello World!'
      ),
      document.getElementById('app')
    )
  </script>
</body>
</html>